Rod-cutter



U NITED STATE PATENT O FICE. Y

CHARLES STACKPOLE, OF LYNX, MASSACHUSETTS.

ROD-CUTTER.

SPECIFICATION forming part of Letters Patent No. 327,610, dated October 6, 1885.

Application and September 15, 1924. seen no. 143,134. (so model.)

To all whom it may concern:

Be it known that I, Cnairnrs F. STACKPOLE, of Lynn, county of Essex, State of Massachusetts, have invented an Improvementin Rod- Cutters, of which the-following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

So far as my knowledge extendsfit hasbeen customary heretofore in wire or rod cutters to connect the die-blocks or die-carriers by means ota common pivot,and to move or oscillate one of the die-carriers on the common pivot past or across the face of the other die-carrier, so that one die will have a movement in the arc of a circle with relation to the other die toget' a shear-cut, asis well known. On the other hand ,the die-carriers have been pivoted eccentrically, so that in the movement of the die-carriers on their eccentric pivots the dies have a sliding longitudinal or reciprocating movement, one with relation tothe other, as opposed to the common shear-cut.

In this my invention I dispense withpivots altogether and impart a rotary movement to, one ofthe dies with relation to the other,whereby I am enabled to provide a rod-cutter of greater leverage and increa ed power. To this end I provide a pair of concentric die carriers or blocks having dies concentric with relation to each other, but eccentric with relation to the die-blocks,and a rotating collar to keep the blocks in proper relation to each other, so that, upon the rotation of one dieblock upon the axis common to both, the dies ecceutrically arranged in the die-blocks will have a rotatory movement, one past the other, to sever the wire or rod placed in said dies.

A feature entirely distinct and new with my said improved rod-cutter is that the dies have a rotatory wiping action upon the rod at the point of severance, so that the severed ends will be slightly compressed or rounded ofi,

whereby the severed portionwill be devoidot' the usual tin orsharp or projecting edge commonly left after the use of the ordinary rod cutters, thereby enabling the end of the blank to beeasily projected into an orifice of the diameter of the rod. v

Referring tothe drawings, Figure 1 shows in central section any improvements in rodcutters. Fig. 2 is a face or plan view of one of the die-blocks and dies; Fig. 3, the other die-block and die. "ation simple means to enable the rod-cutter to be operated by hand; and Fig. 5 shows the condition of the ends of apiece of rod when severed by my improved rod-cutter.

Broadly, I provide a pairof concentric dieblocks, A A, the meeting-faces of which receive the dies a 0, having central rod-receiving orifices, b L, of a size and shape to receive the rod to be severed, the saiddies being eccentrically arranged in the die-blocks, so that the axial point common to both dies will be-to one side of or eccentric with relation to the axial point common to both die-blocks. The die-blocks are provided with anysuitable collar or keeper, 0, to retain them in proper position with each other, and allow'rotary movement of both or either one of the said blocks. anism may beprovided to operate the dieblocks.

7 In the present instance I have shown the die'block A as bci ng provided with an annular recess, 2,in.its face to receive a corresponding projection, 3, in the face of the die-block A, while the latter die-block is provided with a screw-thread on its periphery to engage the interiorly screw-threaded collar 0, the said collar having an inwardly-projecting annular rim, 4, to retain the die-block A therein.

A set-screw, e, passing through the collar engages the die-block A',to prevent any movement thereof in the collar. As one of the simplest means of operating the die-block, I have shown in Fig. 4 the die-block Aclamped in a vise, while the die-block A is provided with a lever, l), to enable the latter to be retated with relation to the former, and thereby sever a rod that may be placed in the rod-re ceiving, orifieesot'the dies. The rod-receiving orifices register when the parts are in normal position, and are furthest removed from each other or most out of line upon a half-rotation of one block on the other, the said throw or movement being double the amount of eccentricity of the axial point of the dies from the axial point of the die-blocks.

I claim- Fig. 4 shows in side ele:

Any suitable known means or mech- V 1 An improved rod or wire cutter, consisting,

essentially, of a pair of concentric die-blocks provided with a pair of eccentric dies having rod-receiving orifices and a collar adapted to retain the die-blocks in proper relation with each 0ther and permit rotary movement thereof,,-for the purpose set forth.

2. Animproved rod or wire cutter,consisting, essentially, of a pair of concentric die-blocks adaptedto be rotated on their common axial point with relation to each other. asspecified, and provided with a retaining-collar and a pair of dies having a common axial point eccentric with relation to the axial point of the die-blocks, substantially as set forth. I

3. An improved rod or wire cutter, consisting,

essentially, of a pair of concentric die-blocks Q having meetingfaces and provided with a pair of dies having suitable rod-receiving orifices, the said dies arranged in the die-blocks concentric with each other and eccentric with the 20 said die-blocks, and means for retaining the die-blocks in proper relation with each other and yet permit the rotation of one or the other on the axis common to both, substantially as set. forth. 25 In testimony whereof I have signed my name to this specification in the presence oftwo subscribing witnesses.

CHARLES F. STACKPOL-E.

W'itnesses: V g

G. W. GREGORY, Y J. H. LAXGE. 

